/* roulang page: index */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition);
            border-bottom: 1px solid transparent;
        }

        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-light);
        }

        h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 16px;
        }

        h3 {
            font-size: clamp(18px, 2.5vw, 22px);
            font-weight: 600;
        }

        p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad);
        }

        .section-alt {
            background-color: var(--bg-dark-gray);
        }

        .section-light {
            background-color: var(--bg-light);
        }

        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }

        .section-light p {
            color: #5A5548;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }

        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-light .section-title {
            color: var(--text-dark);
        }

        .section-light .section-desc {
            color: #5A5548;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }

        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 14px;
            border-radius: 8px;
            border-bottom: none;
            white-space: nowrap;
            transition: color var(--transition), background-color var(--transition);
        }

        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
            border-bottom: none;
        }

        .main-nav a.active {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.08);
            border-bottom: none;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-warm);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.25);
            border-bottom: none;
            color: #fff;
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(0);
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(255, 90, 55, 0.2);
        }

        .btn-secondary {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
            box-shadow: none;
        }

        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            color: var(--secondary);
            transform: translateY(-2px);
            border-bottom: 1.5px solid var(--secondary);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(46, 230, 214, 0.15);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-block {
            width: 100%;
            justify-content: center;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            z-index: 1100;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-light);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 12, 18, 0.98);
            z-index: 1050;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 8px;
            padding: 80px 24px 40px;
            overflow-y: auto;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            padding: 14px 24px;
            border-bottom: none;
            text-align: center;
            width: 100%;
            max-width: 400px;
            border-radius: 12px;
            transition: background var(--transition);
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
            color: var(--secondary);
        }

        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
            max-width: 400px;
            font-size: 17px;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            padding: 150px 0 90px;
            background: var(--bg-charcoal);
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.12) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(46, 230, 214, 0.08) 0%, transparent 60%);
            pointer-events: none;
            z-index: 0;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.08);
            border: 1px solid rgba(46, 230, 214, 0.25);
            padding: 8px 16px;
            border-radius: 20px;
            width: fit-content;
            letter-spacing: 0.02em;
        }

        .hero-badge svg {
            width: 16px;
            height: 16px;
            fill: var(--secondary);
            flex-shrink: 0;
        }

        .hero h1 {
            font-size: clamp(30px, 4.5vw, 46px);
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.015em;
            color: var(--text-light);
        }

        .hero h1 .highlight {
            color: var(--primary);
            border-bottom: 3px solid var(--primary);
            padding-bottom: 2px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-gray);
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .hero-data-points {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .hero-data-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-data-number {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
        }

        .hero-data-number span {
            color: var(--primary);
            font-size: 20px;
        }

        .hero-data-label {
            font-size: 13px;
            color: var(--text-gray);
            font-weight: 500;
        }

        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-card {
            background: var(--bg-dark-gray);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .hero-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
        }

        .hero-card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .hero-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .hero-card:hover .hero-card-image img {
            transform: scale(1.03);
        }

        .hero-card-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(13, 12, 18, 0.85) 100%);
            pointer-events: none;
        }

        .hero-card-overlay {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-card-overlay span {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-light);
            background: rgba(13, 12, 18, 0.7);
            padding: 6px 12px;
            border-radius: 6px;
            backdrop-filter: blur(6px);
        }

        .hero-card-body {
            padding: 24px;
        }

        .hero-card-body h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .hero-card-toc {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 18px;
        }

        .hero-card-toc li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.55;
        }

        .hero-card-toc li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
        }

        .hero-form {
            display: flex;
            gap: 10px;
            margin-top: 8px;
        }

        .hero-form input {
            flex: 1;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 12px 16px;
            color: var(--text-light);
            font-size: 14px;
            transition: border-color var(--transition);
            min-width: 0;
        }

        .hero-form input::placeholder {
            color: #6A665C;
        }

        .hero-form input:focus {
            border-color: var(--secondary);
            outline: none;
        }

        .hero-form .btn {
            flex-shrink: 0;
            padding: 12px 20px;
            font-size: 14px;
        }

        .hero-note {
            font-size: 12px;
            color: #6A665C;
            margin-top: 10px;
            line-height: 1.5;
        }

        /* ========== Pain Points ========== */
        .pain-points {
            background: var(--bg-charcoal);
        }

        .pain-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 1fr;
            gap: 24px;
            margin-top: 40px;
        }

        .pain-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 90, 55, 0.4);
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.1);
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 90, 55, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .pain-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
            color: var(--text-light);
        }

        .pain-card p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
        }

        .pain-card .pain-tag {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 11px;
            font-weight: 600;
            color: rgba(255, 90, 55, 0.8);
            background: rgba(255, 90, 55, 0.1);
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.03em;
        }

        /* ========== Solution ========== */
        .solution {
            background: var(--bg-dark-gray);
        }

        .solution-steps {
            display: flex;
            flex-direction: column;
            gap: 28px;
            margin-top: 40px;
        }

        .solution-step {
            display: grid;
            grid-template-columns: 80px 1fr 1.2fr;
            gap: 32px;
            align-items: center;
            background: var(--bg-charcoal);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            transition: transform var(--transition), border-color var(--transition);
            position: relative;
        }

        .solution-step:hover {
            transform: translateX(4px);
            border-color: rgba(46, 230, 214, 0.35);
        }

        .solution-step-number {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(46, 230, 214, 0.1);
            border: 2px solid rgba(46, 230, 214, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 800;
            color: var(--secondary);
            flex-shrink: 0;
        }

        .solution-step-content h3 {
            font-size: 19px;
            margin-bottom: 8px;
            color: var(--text-light);
        }

        .solution-step-content p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.7;
        }

        .solution-step-image {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/9;
        }

        .solution-step-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .solution-step:hover .solution-step-image img {
            transform: scale(1.05);
        }

        .solution-step:nth-child(2) .solution-step-number {
            background: rgba(255, 90, 55, 0.1);
            border-color: rgba(255, 90, 55, 0.3);
            color: var(--primary);
        }

        .solution-step:nth-child(3) .solution-step-number {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.15);
            color: var(--text-light);
        }

        .solution-step:nth-child(4) .solution-step-number {
            background: rgba(46, 230, 214, 0.08);
            border-color: rgba(46, 230, 214, 0.25);
            color: var(--secondary);
        }

        /* ========== Results / Metrics ========== */
        .results {
            background: var(--bg-light);
        }

        .results-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-top: 40px;
        }

        .results-metrics {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--border-dark);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }

        .metric-number {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }

        .metric-number .unit {
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
        }

        .metric-label {
            font-size: 14px;
            color: #5A5548;
            font-weight: 500;
        }

        .results-visual {
            background: var(--bg-dark-gray);
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }

        .results-visual h3 {
            color: var(--text-light);
            margin-bottom: 16px;
            font-size: 18px;
        }

        .results-bars {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .result-bar-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .result-bar-label {
            font-size: 13px;
            color: var(--text-gray);
            font-weight: 500;
            display: flex;
            justify-content: space-between;
        }

        .result-bar-track {
            height: 8px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            overflow: hidden;
        }

        .result-bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 1.2s ease;
        }

        .result-bar-fill.coral {
            background: linear-gradient(90deg, var(--primary), #FF8A65);
            width: 92%;
        }

        .result-bar-fill.cyan {
            background: linear-gradient(90deg, var(--secondary), #7AFFF0);
            width: 86%;
        }

        .result-bar-fill.light {
            background: linear-gradient(90deg, #F5F1E8, #E0DACC);
            width: 78%;
        }

        .result-bar-fill.mixed {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            width: 95%;
        }

        /* ========== Testimonials ========== */
        .testimonials {
            background: var(--bg-charcoal);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .testimonial-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: 0 8px 28px rgba(46, 230, 214, 0.08);
        }

        .testimonial-text {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-gray);
            flex: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .testimonial-avatar.cyan {
            background: linear-gradient(135deg, var(--secondary), #7AFFF0);
            color: var(--bg-charcoal);
        }

        .testimonial-author-info {
            display: flex;
            flex-direction: column;
        }

        .testimonial-author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
        }

        .testimonial-author-role {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* ========== News / Updates ========== */
        .news {
            background: var(--bg-dark-gray);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 32px;
            margin-top: 40px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            padding: 24px 0;
            border-bottom: 1px solid var(--border-light);
            transition: padding-left var(--transition);
        }

        .news-item:first-child {
            padding-top: 0;
        }

        .news-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .news-item:hover {
            padding-left: 12px;
        }

        .news-item-meta {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: #6A665C;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .news-item-meta .news-date {
            color: var(--secondary);
            font-weight: 600;
        }

        .news-item h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-light);
            line-height: 1.45;
        }

        .news-item p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
        }

        .news-sidebar {
            background: var(--bg-charcoal);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            padding: 24px;
        }

        .news-sidebar h3 {
            font-size: 17px;
            margin-bottom: 16px;
            color: var(--text-light);
        }

        .news-sidebar-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: center;
            transition: transform var(--transition);
            cursor: pointer;
        }

        .news-sidebar-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .news-sidebar-item:first-child {
            padding-top: 0;
        }

        .news-sidebar-item:hover {
            transform: translateX(4px);
        }

        .news-sidebar-image {
            width: 56px;
            height: 42px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .news-sidebar-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-sidebar-item span {
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
            line-height: 1.45;
        }

        /* ========== Capabilities / Partner Tags ========== */
        .capabilities {
            background: var(--bg-charcoal);
        }

        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .capability-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: transform var(--transition), border-color var(--transition);
        }

        .capability-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 90, 55, 0.35);
        }

        .capability-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .capability-card h4::before {
            content: '◆';
            font-size: 10px;
            color: var(--primary);
        }

        .capability-card p {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq {
            background: var(--bg-dark-gray);
        }

        .faq-list {
            max-width: 800px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-charcoal);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item.active {
            border-color: rgba(46, 230, 214, 0.35);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
            -webkit-user-select: none;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            margin: 0;
        }

        .faq-toggle {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(46, 230, 214, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition), background var(--transition);
            font-size: 16px;
            color: var(--secondary);
            font-weight: 700;
        }

        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
            background: rgba(46, 230, 214, 0.2);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.8;
        }

        /* ========== Brand Intro ========== */
        .brand-intro {
            background: var(--bg-light);
        }

        .brand-intro .container {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-visual {
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
        }

        .brand-intro-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-intro-content h2 {
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .brand-intro-content p {
            color: #5A5548;
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 14px;
        }

        /* ========== Final CTA ========== */
        .final-cta {
            background: var(--bg-charcoal);
            position: relative;
            overflow: hidden;
        }

        .final-cta::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.1) 0%, transparent 55%);
            pointer-events: none;
        }

        .final-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .final-cta h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .final-cta p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .final-cta .btn {
            margin-bottom: 16px;
        }

        .final-cta-note {
            font-size: 13px;
            color: #6A665C;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark-gray);
            border-top: 1px solid var(--border-light);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            padding: 6px 0;
            border-bottom: none;
            transition: color var(--transition), padding-left var(--transition);
            line-height: 1.6;
        }

        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 8px;
            border-bottom: none;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 13px;
            color: #6A665C;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #6A665C;
        }

        .footer-bottom a {
            font-size: 13px;
            color: #6A665C;
            border-bottom: none;
        }

        .footer-bottom a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                font-size: 12.5px;
                padding: 7px 10px;
            }
            .hero {
                padding: 120px 0 70px;
                min-height: auto;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .pain-grid {
                grid-template-columns: 1fr 1fr;
            }
            .pain-card:nth-child(3) {
                grid-column: span 2;
            }
            .solution-step {
                grid-template-columns: 64px 1fr;
                gap: 20px;
                padding: 24px;
            }
            .solution-step-image {
                grid-column: 2;
                margin-top: 8px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .capability-grid {
                grid-template-columns: 1fr 1fr;
            }
            .brand-intro .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .results-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }
            .header-inner {
                padding: 12px 0;
            }
            .main-nav {
                display: none;
            }
            .header-cta .btn {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero {
                padding: 100px 0 56px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-data-points {
                gap: 20px;
            }
            .hero-form {
                flex-direction: column;
            }
            .hero-form .btn {
                width: 100%;
            }
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .pain-card:nth-child(3) {
                grid-column: auto;
            }
            .solution-step {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 20px;
            }
            .solution-step-image {
                grid-column: auto;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .results-metrics {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-links {
                justify-content: center;
            }
            .brand-intro .container {
                gap: 24px;
            }
            .brand-intro-visual {
                aspect-ratio: 16/10;
            }
            .final-cta h2 {
                font-size: 24px;
            }
            .container {
                padding: 0 20px;
            }
            .metric-number {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-data-points {
                flex-direction: column;
                gap: 12px;
            }
            .hero-card-body {
                padding: 16px;
            }
            .solution-step-number {
                width: 48px;
                height: 48px;
                font-size: 20px;
            }
            .testimonial-card {
                padding: 18px;
            }
            .news-item h4 {
                font-size: 15px;
            }
            .capability-card {
                padding: 16px 18px;
            }
            .faq-question {
                padding: 16px 18px;
            }
            .faq-question h3 {
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 15px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition);
            border-bottom: 1px solid transparent;
        }

        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad);
        }

        .section-alt {
            background-color: var(--bg-dark-gray);
        }

        .section-light {
            background-color: var(--bg-light);
        }

        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }

        .section-light p {
            color: #5A5548;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }

        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            line-height: 1.15;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-light .section-title {
            color: var(--text-dark);
        }

        .section-light .section-desc {
            color: #5A5548;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }

        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .main-nav a {
            font-size: 13.5px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 12px;
            border-radius: 8px;
            border-bottom: none;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
        }

        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(255, 90, 55, 0.12);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            border-bottom: none;
            box-shadow: var(--shadow-warm);
            white-space: nowrap;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .nav-cta:hover {
            background: #FF6B4A;
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.25);
        }

        .nav-cta:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: transparent;
        }

        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 12, 18, 0.97);
            z-index: 999;
            padding: 100px 24px 40px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-panel.open {
            display: flex;
        }

        .mobile-panel a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            padding: 14px 8px;
            border-bottom: 1px solid var(--border-light);
            display: block;
        }

        .mobile-panel a.active {
            color: var(--primary-light);
        }

        .mobile-panel .nav-cta {
            margin-top: 20px;
            text-align: center;
            font-size: 16px;
            padding: 16px;
            width: 100%;
        }

        /* Page Hero */
        .page-hero {
            padding: 160px 0 80px;
            background: linear-gradient(180deg, rgba(13, 12, 18, 0.9) 0%, rgba(23, 21, 30, 0.95) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-light);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -100px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 230, 214, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-gray);
            margin-bottom: 20px;
        }

        .hero-breadcrumb a {
            color: var(--text-gray);
            border-bottom: none;
        }

        .hero-breadcrumb a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        .hero-breadcrumb span {
            color: var(--primary-light);
        }

        .hero-title {
            font-size: clamp(32px, 5vw, 44px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            color: var(--text-light);
        }

        .hero-title .highlight {
            color: var(--primary-light);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-gray);
            max-width: 640px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border-bottom: none;
            box-shadow: var(--shadow-warm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), outline var(--transition);
        }

        .btn-primary:hover {
            background: #FF6B4A;
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: 0 14px 40px rgba(255, 90, 55, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        .btn-primary:active {
            transform: translateY(0);
            background: var(--primary-dark);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--secondary);
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border: 1.5px solid var(--secondary);
            border-bottom: 1.5px solid var(--secondary);
            transition: background var(--transition), transform var(--transition), border-color var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            color: var(--secondary);
            border-color: var(--secondary);
            border-bottom: 1.5px solid var(--secondary);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
        }

        .hero-stat-row {
            display: flex;
            gap: 32px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-light);
            font-family: var(--font-num);
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-gray);
            margin-top: 4px;
        }

        /* Timeline Section */
        .timeline-section {
            background: linear-gradient(180deg, var(--bg-charcoal) 0%, var(--bg-dark-gray) 100%);
            position: relative;
        }

        .timeline-wrapper {
            position: relative;
            padding: 8px 0 16px;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(255, 90, 55, 0.4), rgba(46, 230, 214, 0.3), rgba(255, 90, 55, 0.4));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 72px;
            margin-bottom: 40px;
        }

        .timeline-item:last-child {
            margin-bottom: 8px;
        }

        .timeline-dot {
            position: absolute;
            left: 15px;
            top: 4px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-charcoal);
            box-shadow: 0 0 0 4px rgba(255, 90, 55, 0.3), var(--shadow-warm);
            z-index: 2;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            background: var(--secondary);
            box-shadow: 0 0 0 4px rgba(46, 230, 214, 0.25), var(--shadow-cyan);
        }

        .timeline-card {
            background: var(--bg-charcoal);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .timeline-card:hover {
            transform: translateX(4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-card);
        }

        .timeline-card-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 12px;
        }

        .timeline-step-num {
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-light);
            background: rgba(255, 90, 55, 0.1);
            padding: 4px 12px;
            border-radius: 20px;
            border: 1px solid rgba(255, 90, 55, 0.25);
            white-space: nowrap;
        }

        .timeline-item:nth-child(even) .timeline-step-num {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.08);
            border-color: rgba(46, 230, 214, 0.25);
        }

        .timeline-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-light);
            margin: 0;
        }

        .timeline-card p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .timeline-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .timeline-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-gray);
            background: rgba(255, 255, 255, 0.05);
            padding: 4px 12px;
            border-radius: 20px;
            border: 1px solid var(--border-light);
        }

        .timeline-media {
            margin-top: 16px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .timeline-media img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        /* Scenario Cards */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: var(--bg-charcoal);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-card);
        }

        .scenario-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 90, 55, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 90, 55, 0.25);
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 14.5px;
            color: var(--text-gray);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            background-color: var(--bg-dark-gray);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-charcoal);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), background var(--transition);
        }

        .faq-item.active {
            border-color: rgba(46, 230, 214, 0.3);
            background: #1A1822;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            gap: 16px;
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            transition: transform var(--transition);
            color: var(--secondary);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 14.5px;
            color: var(--text-gray);
            line-height: 1.75;
        }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, rgba(255, 90, 55, 0.12) 0%, rgba(23, 21, 30, 0.95) 50%, rgba(46, 230, 214, 0.08) 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border-radius: var(--radius-card);
            padding: 64px 40px;
            text-align: center;
            border: 1px solid rgba(255, 90, 55, 0.2);
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: 20%;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.2) 0%, transparent 70%);
        }

        .cta-banner h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 16px;
            color: var(--text-gray);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
            line-height: 1.75;
        }

        .cta-banner .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 17px;
            padding: 16px 36px;
        }

        .cta-note {
            font-size: 13px;
            color: var(--text-gray);
            margin-top: 14px;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #09080D;
            border-top: 1px solid var(--border-light);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.75;
            max-width: 380px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            padding: 6px 0;
            border-bottom: none;
            transition: color var(--transition), transform var(--transition);
        }

        .footer-col a:hover {
            color: var(--secondary);
            border-bottom: none;
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 13px;
            color: #6F6A62;
            justify-content: space-between;
            align-items: center;
        }

        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 13px;
        }

        .footer-links a {
            color: #6F6A62;
            border-bottom: none;
        }

        .footer-links a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        .footer-links span {
            color: #44403A;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .section {
                padding: var(--section-pad-mobile);
            }
            .page-hero {
                padding: 120px 0 56px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .hero-stat-row {
                gap: 20px;
            }
            .hero-stat-number {
                font-size: 24px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .timeline-wrapper::before {
                left: 14px;
            }
            .timeline-item {
                padding-left: 56px;
            }
            .timeline-dot {
                left: 5px;
                width: 18px;
                height: 18px;
            }
            .timeline-card {
                padding: 20px;
            }
            .timeline-card:hover {
                transform: none;
            }
            .cta-banner {
                padding: 40px 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .timeline-card-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .timeline-media img {
                height: 120px;
            }
            .scenario-card {
                padding: 20px;
            }
            .faq-question {
                font-size: 14.5px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition);
            border-bottom: 1px solid transparent;
        }
        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background-color: var(--bg-dark-gray);
        }
        .section-light {
            background-color: var(--bg-light);
        }
        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }
        .section-light p {
            color: #5A5548;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }
        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            line-height: 1.25;
        }
        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }
        .section-light .section-title {
            color: var(--text-dark);
        }
        .section-light .section-desc {
            color: #5A5548;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }
        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 14px;
            border-radius: 8px;
            border-bottom: none;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition), border-color var(--transition);
        }
        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.05);
            border-bottom: none;
        }
        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(255, 90, 55, 0.12);
            border: 1px solid rgba(255, 90, 55, 0.25);
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            box-shadow: var(--shadow-warm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
            border-bottom: none;
            box-shadow: 0 10px 32px rgba(255, 90, 55, 0.25), 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.04);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 12, 18, 0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            z-index: 999;
            padding: 90px 24px 40px;
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            padding: 14px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: block;
        }
        .mobile-menu a.active {
            color: var(--primary-light);
            border-bottom-color: rgba(255, 90, 55, 0.3);
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.04);
            border-bottom-color: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu .header-cta {
            margin-top: 16px;
            justify-content: center;
            font-size: 16px;
            padding: 14px 20px;
        }

        /* Category Hero */
        .category-hero {
            padding: 160px 0 80px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 12, 18, 0.75) 0%, rgba(13, 12, 18, 0.88) 100%);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 90, 55, 0.18) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 40%, rgba(46, 230, 214, 0.1) 0%, transparent 55%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero-content {
            max-width: 720px;
        }
        .category-hero h1 {
            font-size: clamp(32px, 5vw, 46px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .category-hero h1 span {
            color: var(--primary-light);
        }
        .category-hero p {
            font-size: 17px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 560px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            box-shadow: var(--shadow-warm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
            border-bottom: none;
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.3), 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            background: #D43E1F;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            background: transparent;
            padding: 13px 26px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--secondary);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            transform: translateY(-2px);
            color: var(--secondary);
            box-shadow: var(--shadow-cyan);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(46, 230, 214, 0.06);
        }
        .hero-metrics {
            display: flex;
            gap: 32px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-metric {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-metric .num {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.01em;
        }
        .hero-metric .label {
            font-size: 13px;
            color: var(--text-gray);
            letter-spacing: 0.03em;
        }

        /* Main Content Layout */
        .service-main {
            padding: 64px 0 88px;
            background: var(--bg-charcoal);
        }
        .service-layout {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 32px;
            align-items: start;
        }
        .service-sidebar {
            position: sticky;
            top: 90px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .sidebar-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 20px;
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .filter-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .filter-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid transparent;
            transition: background var(--transition), color var(--transition), border-color var(--transition);
            text-align: left;
            width: 100%;
        }
        .filter-btn:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
        }
        .filter-btn.active {
            background: rgba(255, 90, 55, 0.1);
            color: var(--primary-light);
            border-color: rgba(255, 90, 55, 0.25);
        }
        .filter-btn .count {
            font-family: var(--font-num);
            font-size: 12px;
            color: var(--text-gray);
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: 10px;
        }
        .filter-btn.active .count {
            background: rgba(255, 90, 55, 0.2);
            color: var(--primary-light);
        }
        .sidebar-info-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sidebar-info-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }
        .sidebar-info-item .dot {
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
            margin-top: 7px;
        }
        .sidebar-note {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.6;
            background: rgba(46, 230, 214, 0.05);
            border: 1px solid rgba(46, 230, 214, 0.15);
            border-radius: 10px;
            padding: 14px;
        }

        /* Service Cards Grid */
        .service-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.4);
            box-shadow: var(--shadow-cyan);
        }
        .service-card:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 2px rgba(46, 230, 214, 0.3);
        }
        .service-card-image {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .service-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .service-card:hover .service-card-image img {
            transform: scale(1.06);
        }
        .service-card-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(13, 12, 18, 0.6) 100%);
            pointer-events: none;
        }
        .service-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 1;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: rgba(13, 12, 18, 0.7);
            backdrop-filter: blur(8px);
            padding: 5px 12px;
            border-radius: 6px;
            letter-spacing: 0.03em;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .service-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .service-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.3;
        }
        .service-card-body p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.65;
            flex: 1;
        }
        .service-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 4px;
        }
        .service-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition), color var(--transition);
        }
        .service-card-link:hover {
            border-bottom-color: var(--secondary);
            color: var(--secondary);
        }
        .service-card-link .arrow {
            transition: transform var(--transition);
        }
        .service-card:hover .service-card-link .arrow {
            transform: translateX(4px);
        }

        /* Scene Section */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .scene-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        .scene-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 90, 55, 0.35);
            box-shadow: var(--shadow-warm);
        }
        .scene-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .scene-card p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.7;
        }
        .scene-card .scene-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 90, 55, 0.1);
            border: 1px solid rgba(255, 90, 55, 0.2);
            font-size: 20px;
            margin-bottom: 14px;
        }

        /* Process Section */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
        }
        .process-list::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            opacity: 0.4;
        }
        .process-item {
            display: flex;
            gap: 20px;
            padding: 16px 0;
            position: relative;
        }
        .process-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-dark-gray);
            border: 2px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-light);
            z-index: 1;
            transition: background var(--transition), color var(--transition);
        }
        .process-item:hover .process-num {
            background: var(--primary);
            color: #fff;
        }
        .process-content {
            flex: 1;
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .process-item:hover .process-content {
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-cyan);
        }
        .process-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 6px;
        }
        .process-content p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.65;
        }

        /* Brand Section */
        .brand-section {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            margin: 0 auto;
            max-width: 1100px;
        }
        .brand-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .brand-section p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(46, 230, 214, 0.25);
        }
        .faq-item.active {
            border-color: rgba(46, 230, 214, 0.4);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            text-align: left;
            width: 100%;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-gray);
            transition: transform var(--transition), background var(--transition), border-color var(--transition);
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            background: rgba(46, 230, 214, 0.1);
            border-color: rgba(46, 230, 214, 0.4);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: var(--bg-dark-gray);
            background-image: radial-gradient(ellipse at 50% 50%, rgba(255, 90, 55, 0.12) 0%, transparent 65%),
                radial-gradient(ellipse at 50% 50%, rgba(46, 230, 214, 0.06) 0%, transparent 70%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .cta-section h2 span {
            color: var(--primary-light);
        }
        .cta-section p {
            font-size: 16px;
            color: var(--text-gray);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            font-size: 16px;
            padding: 16px 36px;
        }
        .cta-subnote {
            margin-top: 14px;
            font-size: 13px;
            color: var(--text-gray);
        }

        /* Footer */
        .site-footer {
            background: #0A090E;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            padding: 6px 0;
            border-bottom: none;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            border-bottom: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 24px;
            font-size: 13px;
            color: #6B6670;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: #6B6670;
            border-bottom: none;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            border-bottom: none;
        }
        .footer-links span {
            color: #4A4650;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav a {
                font-size: 13px;
                padding: 8px 10px;
            }
            .service-layout {
                grid-template-columns: 240px 1fr;
                gap: 24px;
            }
            .service-cards-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }
            .header-cta {
                display: none;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .category-hero {
                padding: 130px 0 56px;
                min-height: auto;
            }
            .category-hero h1 {
                font-size: clamp(28px, 7vw, 36px);
            }
            .hero-metrics {
                gap: 20px;
            }
            .hero-metric .num {
                font-size: 22px;
            }
            .service-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .service-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr;
                gap: 12px;
                order: 2;
            }
            .service-cards-grid {
                order: 1;
            }
            .brand-section {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .process-list::before {
                left: 15px;
            }
            .process-num {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
            .process-item {
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary,
            .btn-secondary {
                justify-content: center;
                width: 100%;
                text-align: center;
            }
            .service-card-image {
                height: 150px;
            }
            .cta-section .btn-primary {
                width: 100%;
                justify-content: center;
                font-size: 15px;
                padding: 14px 24px;
            }
        }

/* roulang page: category3 */
:root {
--primary: #FF5A37;
--primary-dark: #E6492A;
--primary-light: #FF7A5C;
--secondary: #2EE6D6;
--secondary-dark: #1CC4B6;
--bg-charcoal: #0D0C12;
--bg-dark-gray: #17151E;
--bg-light: #F5F1E8;
--text-light: #F5F1E8;
--text-gray: #B8B2A7;
--text-dark: #1A181E;
--border-light: rgba(255, 255, 255, 0.08);
--border-dark: rgba(0, 0, 0, 0.06);
--shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
--shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
--shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
--radius-card: 16px;
--radius-sm: 12px;
--radius-btn: 10px;
--font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
--font-num: 'Inter', system-ui, sans-serif;
--container-max: 1200px;
--section-pad: 88px 0;
--section-pad-mobile: 56px 0;
--transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
*,
*::before,
*::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
html {
scroll-behavior: smooth;
-webkit-text-size-adjust: 100%;
}
body {
font-family: var(--font-sans);
font-size: 16px;
line-height: 1.7;
color: var(--text-light);
background-color: var(--bg-charcoal);
min-height: 100vh;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
overflow-x: hidden;
}
a {
color: var(--secondary);
text-decoration: none;
transition: color var(--transition), border-color var(--transition), background-color var(--transition);
border-bottom: 1px solid transparent;
}
a:hover {
color: var(--secondary);
border-bottom-color: var(--secondary);
}
img {
max-width: 100%;
height: auto;
display: block;
}
button,
input,
textarea,
select {
font-family: var(--font-sans);
font-size: 16px;
outline: none;
}
button {
cursor: pointer;
border: none;
background: none;
color: inherit;
}
.container {
max-width: var(--container-max);
margin: 0 auto;
padding: 0 24px;
}
.section {
padding: var(--section-pad);
}
.section-alt {
background-color: var(--bg-dark-gray);
}
.section-light {
background-color: var(--bg-light);
}
.section-light h2,
.section-light h3 {
color: var(--text-dark);
}
.section-light p {
color: #5A5548;
}
.section-tag {
display: inline-flex;
align-items: center;
gap: 8px;
font-size: 13px;
font-weight: 600;
letter-spacing: 0.04em;
color: var(--secondary);
text-transform: uppercase;
margin-bottom: 12px;
border: 1px solid rgba(46, 230, 214, 0.3);
padding: 6px 14px;
border-radius: 20px;
background: rgba(46, 230, 214, 0.06);
}
.section-title {
font-size: clamp(24px, 3.5vw, 32px);
font-weight: 700;
margin-bottom: 12px;
color: var(--text-light);
line-height: 1.3;
}
.section-desc {
font-size: 16px;
line-height: 1.75;
color: var(--text-gray);
max-width: 720px;
margin-bottom: 32px;
}
.section-light .section-title {
color: var(--text-dark);
}
.section-light .section-desc {
color: #5A5548;
}
/* ========== Header / Navigation ========== */
.site-header {
position: fixed;
top: 0;
left: 0;
right: 0;
z-index: 1000;
background: rgba(13, 12, 18, 0.72);
backdrop-filter: blur(24px);
-webkit-backdrop-filter: blur(24px);
border-bottom: 1px solid transparent;
transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
background: rgba(13, 12, 18, 0.94);
border-bottom-color: rgba(255, 255, 255, 0.06);
box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}
.header-inner {
display: flex;
align-items: center;
justify-content: space-between;
padding: 14px 0;
gap: 16px;
}
.logo {
display: flex;
align-items: center;
gap: 10px;
font-size: 22px;
font-weight: 800;
color: var(--text-light);
letter-spacing: -0.02em;
white-space: nowrap;
border-bottom: none;
text-decoration: none;
}
.logo-icon {
width: 36px;
height: 36px;
border-radius: 10px;
background: linear-gradient(135deg, var(--primary), #FF8A65);
display: flex;
align-items: center;
justify-content: center;
font-size: 18px;
font-weight: 800;
color: #fff;
flex-shrink: 0;
box-shadow: var(--shadow-warm);
}
.logo:hover {
color: var(--text-light);
border-bottom: none;
}
.main-nav {
display: flex;
align-items: center;
gap: 2px;
flex-wrap: wrap;
}
.main-nav a {
font-size: 14px;
font-weight: 500;
color: var(--text-gray);
padding: 8px 12px;
border-radius: 8px;
border-bottom: none;
white-space: nowrap;
transition: color var(--transition), background-color var(--transition);
}
.main-nav a:hover {
color: var(--text-light);
background: rgba(255, 255, 255, 0.05);
border-bottom: none;
}
.main-nav a.active {
color: var(--secondary);
background: rgba(46, 230, 214, 0.08);
font-weight: 600;
}
.nav-cta {
display: inline-flex;
align-items: center;
gap: 6px;
background: var(--primary);
color: #fff !important;
font-weight: 600;
font-size: 14px;
padding: 10px 18px;
border-radius: var(--radius-btn);
box-shadow: var(--shadow-warm);
border-bottom: none !important;
transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.nav-cta:hover {
background: var(--primary-dark);
transform: translateY(-2px);
box-shadow: 0 12px 36px rgba(255, 90, 55, 0.28);
border-bottom: none;
color: #fff;
}
.nav-toggle {
display: none;
flex-direction: column;
gap: 5px;
padding: 8px;
border-radius: 8px;
background: rgba(255, 255, 255, 0.04);
}
.nav-toggle span {
width: 22px;
height: 2px;
background: var(--text-light);
border-radius: 2px;
transition: all var(--transition);
}
.nav-toggle.open span:nth-child(1) {
transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
transform: translateY(-7px) rotate(-45deg);
}
/* ========== Hero ========== */
.hero-section {
position: relative;
padding: 140px 0 80px;
background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
min-height: 520px;
display: flex;
align-items: center;
}
.hero-section::before {
content: '';
position: absolute;
inset: 0;
background: linear-gradient(135deg, rgba(13, 12, 18, 0.88) 0%, rgba(13, 12, 18, 0.68) 40%, rgba(13, 12, 18, 0.5) 100%);
}
.hero-section::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 80px;
background: linear-gradient(to top, var(--bg-charcoal) 20%, transparent 100%);
pointer-events: none;
}
.hero-content {
position: relative;
z-index: 1;
display: grid;
grid-template-columns: 1.1fr 0.9fr;
gap: 48px;
align-items: center;
}
.hero-badge {
display: inline-flex;
align-items: center;
gap: 8px;
font-size: 13px;
font-weight: 600;
color: var(--secondary);
background: rgba(46, 230, 214, 0.08);
border: 1px solid rgba(46, 230, 214, 0.25);
padding: 6px 16px;
border-radius: 20px;
margin-bottom: 20px;
}
.hero-title {
font-size: clamp(30px, 4.5vw, 44px);
font-weight: 800;
line-height: 1.15;
color: var(--text-light);
margin-bottom: 18px;
letter-spacing: -0.01em;
}
.hero-title em {
font-style: normal;
color: var(--secondary);
}
.hero-subtitle {
font-size: 17px;
line-height: 1.75;
color: rgba(245, 241, 232, 0.82);
max-width: 560px;
margin-bottom: 28px;
}
.hero-actions {
display: flex;
align-items: center;
gap: 14px;
flex-wrap: wrap;
margin-bottom: 18px;
}
.btn-primary {
display: inline-flex;
align-items: center;
gap: 8px;
background: var(--primary);
color: #fff;
font-weight: 600;
font-size: 15px;
padding: 13px 28px;
border-radius: var(--radius-btn);
border-bottom: none;
box-shadow: var(--shadow-warm);
transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover {
background: var(--primary-dark);
transform: translateY(-2px);
box-shadow: 0 14px 40px rgba(255, 90, 55, 0.32);
border-bottom: none;
color: #fff;
}
.btn-primary:focus-visible {
outline: 2px solid var(--secondary);
outline-offset: 3px;
}
.btn-primary:active {
transform: translateY(0);
background: #D63F22;
}
.btn-secondary {
display: inline-flex;
align-items: center;
gap: 8px;
background: transparent;
color: var(--secondary);
font-weight: 600;
font-size: 15px;
padding: 12px 26px;
border-radius: var(--radius-btn);
border: 1.5px solid var(--secondary);
transition: background var(--transition), transform var(--transition), color var(--transition);
}
.btn-secondary:hover {
background: rgba(46, 230, 214, 0.1);
transform: translateY(-2px);
border-bottom: 1.5px solid var(--secondary);
color: var(--secondary);
}
.btn-secondary:focus-visible {
outline: 2px solid var(--secondary);
outline-offset: 3px;
}
.btn-secondary:active {
transform: translateY(0);
background: rgba(46, 230, 214, 0.18);
}
.hero-note {
font-size: 13px;
color: var(--text-gray);
display: flex;
align-items: center;
gap: 6px;
}
.hero-note .dot {
width: 6px;
height: 6px;
border-radius: 50%;
background: var(--secondary);
animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
0%, 100% { opacity: 1; transform: scale(1); }
50% { opacity: 0.4; transform: scale(1.4); }
}
.hero-visual {
position: relative;
border-radius: var(--radius-card);
overflow: hidden;
box-shadow: var(--shadow-card), 0 0 60px rgba(255, 90, 55, 0.08);
border: 1px solid rgba(255, 255, 255, 0.1);
}
.hero-visual img {
width: 100%;
height: 100%;
object-fit: cover;
min-height: 320px;
}
.hero-visual::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 50%;
background: linear-gradient(to top, rgba(13, 12, 18, 0.7) 0%, transparent 100%);
pointer-events: none;
}
.hero-visual-label {
position: absolute;
bottom: 18px;
left: 18px;
right: 18px;
z-index: 2;
display: flex;
align-items: center;
gap: 10px;
background: rgba(13, 12, 18, 0.82);
backdrop-filter: blur(12px);
padding: 14px 18px;
border-radius: var(--radius-sm);
border: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-visual-label .icon {
width: 32px;
height: 32px;
border-radius: 8px;
background: rgba(46, 230, 214, 0.15);
display: flex;
align-items: center;
justify-content: center;
font-size: 16px;
color: var(--secondary);
flex-shrink: 0;
}
.hero-visual-label span {
font-size: 14px;
font-weight: 500;
color: rgba(245, 241, 232, 0.9);
}
/* ========== Compare Cards ========== */
.compare-section {
background: var(--bg-dark-gray);
position: relative;
}
.compare-section::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
height: 1px;
background: linear-gradient(90deg, transparent, rgba(255, 90, 55, 0.3), rgba(46, 230, 214, 0.3), transparent);
}
.compare-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 20px;
margin-top: 40px;
}
.compare-card {
background: var(--bg-charcoal);
border-radius: var(--radius-card);
border: 1px solid var(--border-light);
padding: 28px 24px;
position: relative;
transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
display: flex;
flex-direction: column;
}
.compare-card:hover {
border-color: rgba(46, 230, 214, 0.3);
box-shadow: var(--shadow-card), 0 0 40px rgba(46, 230, 214, 0.06);
transform: translateY(-4px);
}
.compare-card.featured {
border-color: rgba(255, 90, 55, 0.35);
box-shadow: var(--shadow-warm);
}
.compare-card.featured .compare-card-tag {
background: var(--primary);
color: #fff;
}
.compare-card-tag {
position: absolute;
top: -12px;
right: 20px;
font-size: 12px;
font-weight: 700;
padding: 4px 12px;
border-radius: 20px;
background: rgba(46, 230, 214, 0.18);
color: var(--secondary);
letter-spacing: 0.04em;
}
.compare-card-header {
margin-bottom: 16px;
padding-bottom: 16px;
border-bottom: 1px solid var(--border-light);
}
.compare-card-header h3 {
font-size: 20px;
font-weight: 700;
color: var(--text-light);
margin-bottom: 6px;
}
.compare-card-header .price-range {
font-size: 24px;
font-weight: 800;
font-family: var(--font-num);
color: var(--primary);
margin-bottom: 4px;
}
.compare-card-header .price-range small {
font-size: 13px;
font-weight: 500;
color: var(--text-gray);
}
.compare-card-header .target {
font-size: 13px;
color: var(--text-gray);
}
.compare-card-body {
flex: 1;
display: flex;
flex-direction: column;
gap: 10px;
}
.compare-card-body h4 {
font-size: 13px;
font-weight: 600;
color: var(--text-gray);
text-transform: uppercase;
letter-spacing: 0.04em;
margin-bottom: 4px;
}
.compare-list {
list-style: none;
display: flex;
flex-direction: column;
gap: 8px;
}
.compare-list li {
font-size: 14px;
line-height: 1.5;
color: rgba(245, 241, 232, 0.78);
display: flex;
align-items: flex-start;
gap: 8px;
padding-left: 0;
}
.compare-list li::before {
content: '✓';
color: var(--secondary);
font-weight: 700;
flex-shrink: 0;
font-size: 13px;
line-height: 1.5;
}
.compare-list li.not-included {
color: var(--text-gray);
opacity: 0.6;
}
.compare-list li.not-included::before {
content: '—';
color: #666;
}
.compare-card-footer {
margin-top: 20px;
padding-top: 16px;
border-top: 1px solid var(--border-light);
}
.compare-card-footer .btn-outline-sm {
display: inline-flex;
align-items: center;
gap: 6px;
font-size: 13px;
font-weight: 600;
color: var(--secondary);
border: 1px solid rgba(46, 230, 214, 0.3);
padding: 8px 16px;
border-radius: 8px;
transition: background var(--transition), border-color var(--transition);
}
.compare-card-footer .btn-outline-sm:hover {
background: rgba(46, 230, 214, 0.08);
border-color: var(--secondary);
border-bottom: 1px solid var(--secondary);
color: var(--secondary);
}
/* ========== Service Scope ========== */
.scope-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 16px;
margin-top: 36px;
}
.scope-item {
background: var(--bg-dark-gray);
border: 1px solid var(--border-light);
border-radius: var(--radius-sm);
padding: 20px 18px;
transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
display: flex;
flex-direction: column;
gap: 8px;
}
.scope-item:hover {
border-color: rgba(255, 90, 55, 0.3);
transform: translateY(-3px);
box-shadow: var(--shadow-card);
}
.scope-item .scope-icon {
font-size: 22px;
color: var(--primary);
margin-bottom: 4px;
}
.scope-item h4 {
font-size: 15px;
font-weight: 600;
color: var(--text-light);
}
.scope-item p {
font-size: 13px;
line-height: 1.6;
color: var(--text-gray);
}
/* ========== Selection Guide ========== */
.guide-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 20px;
margin-top: 36px;
}
.guide-step {
background: var(--bg-charcoal);
border: 1px solid var(--border-light);
border-radius: var(--radius-card);
padding: 26px 22px;
position: relative;
transition: border-color var(--transition), box-shadow var(--transition);
}
.guide-step:hover {
border-color: rgba(255, 90, 55, 0.28);
box-shadow: var(--shadow-card);
}
.guide-step .step-num {
font-size: 40px;
font-weight: 800;
font-family: var(--font-num);
color: rgba(255, 90, 55, 0.18);
line-height: 1;
margin-bottom: 12px;
}
.guide-step h3 {
font-size: 17px;
font-weight: 700;
color: var(--text-light);
margin-bottom: 8px;
}
.guide-step p {
font-size: 14px;
line-height: 1.65;
color: var(--text-gray);
}
/* ========== Accordion / Mobile Compare ========== */
.accordion-section {
background: var(--bg-charcoal);
}
.accordion-list {
margin-top: 32px;
display: flex;
flex-direction: column;
gap: 12px;
}
.accordion-item {
border: 1px solid var(--border-light);
border-radius: var(--radius-sm);
background: var(--bg-dark-gray);
overflow: hidden;
transition: border-color var(--transition);
}
.accordion-item:hover {
border-color: rgba(46, 230, 214, 0.22);
}
.accordion-item.open {
border-color: rgba(255, 90, 55, 0.3);
}
.accordion-trigger {
width: 100%;
display: flex;
align-items: center;
justify-content: space-between;
gap: 12px;
padding: 18px 20px;
cursor: pointer;
border-bottom: 1px solid transparent;
transition: background var(--transition);
color: var(--text-light);
text-align: left;
}
.accordion-item.open .accordion-trigger {
border-bottom-color: var(--border-light);
background: rgba(255, 255, 255, 0.02);
}
.accordion-trigger h3 {
font-size: 16px;
font-weight: 600;
color: var(--text-light);
}
.accordion-trigger .accordion-icon {
width: 28px;
height: 28px;
border-radius: 8px;
background: rgba(255, 255, 255, 0.04);
display: flex;
align-items: center;
justify-content: center;
font-size: 14px;
color: var(--secondary);
transition: transform var(--transition);
flex-shrink: 0;
}
.accordion-item.open .accordion-icon {
transform: rotate(180deg);
background: rgba(46, 230, 214, 0.12);
}
.accordion-panel {
max-height: 0;
overflow: hidden;
transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
}
.accordion-item.open .accordion-panel {
max-height: 600px;
}
.accordion-panel-inner {
padding: 0 20px 20px;
}
.accordion-panel-inner .compare-detail-row {
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 0;
border-bottom: 1px solid rgba(255, 255, 255, 0.04);
font-size: 14px;
}
.compare-detail-row .label {
color: var(--text-gray);
}
.compare-detail-row .value {
color: var(--text-light);
font-weight: 500;
}
.compare-detail-row .value.highlight {
color: var(--secondary);
font-weight: 600;
}
/* ========== FAQ ========== */
.faq-section {
background: var(--bg-dark-gray);
}
.faq-list {
margin-top: 32px;
display: flex;
flex-direction: column;
gap: 10px;
}
.faq-item {
border: 1px solid var(--border-light);
border-radius: var(--radius-sm);
background: var(--bg-charcoal);
overflow: hidden;
transition: border-color var(--transition);
}
.faq-item:hover {
border-color: rgba(46, 230, 214, 0.2);
}
.faq-item.open {
border-color: rgba(255, 90, 55, 0.3);
}
.faq-trigger {
width: 100%;
display: flex;
align-items: center;
justify-content: space-between;
gap: 12px;
padding: 16px 18px;
cursor: pointer;
color: var(--text-light);
text-align: left;
transition: background var(--transition);
}
.faq-item.open .faq-trigger {
background: rgba(255, 255, 255, 0.02);
}
.faq-trigger h3 {
font-size: 15px;
font-weight: 600;
color: var(--text-light);
line-height: 1.5;
}
.faq-trigger .faq-icon {
width: 26px;
height: 26px;
border-radius: 7px;
background: rgba(255, 255, 255, 0.04);
display: flex;
align-items: center;
justify-content: center;
font-size: 13px;
color: var(--primary);
transition: transform var(--transition);
flex-shrink: 0;
}
.faq-item.open .faq-icon {
transform: rotate(45deg);
color: var(--secondary);
}
.faq-panel {
max-height: 0;
overflow: hidden;
transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-item.open .faq-panel {
max-height: 400px;
}
.faq-panel-inner {
padding: 0 18px 18px;
font-size: 14px;
line-height: 1.75;
color: var(--text-gray);
}
/* ========== CTA ========== */
.cta-section {
position: relative;
background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
padding: 72px 0;
overflow: hidden;
}
.cta-section::before {
content: '';
position: absolute;
inset: 0;
background: radial-gradient(ellipse at center, rgba(255, 90, 55, 0.18) 0%, rgba(13, 12, 18, 0.88) 65%, rgba(13, 12, 18, 0.92) 100%);
}
.cta-inner {
position: relative;
z-index: 1;
text-align: center;
max-width: 680px;
margin: 0 auto;
}
.cta-inner h2 {
font-size: clamp(26px, 3.5vw, 34px);
font-weight: 800;
color: var(--text-light);
margin-bottom: 14px;
}
.cta-inner p {
font-size: 15px;
line-height: 1.7;
color: rgba(245, 241, 232, 0.78);
margin-bottom: 28px;
}
.cta-inner .btn-primary {
font-size: 16px;
padding: 15px 36px;
}
.cta-inner .cta-sub {
margin-top: 14px;
font-size: 13px;
color: var(--text-gray);
}
/* ========== Footer ========== */
.site-footer {
background: #08070B;
border-top: 1px solid var(--border-light);
padding: 48px 0 28px;
}
.footer-grid {
display: grid;
grid-template-columns: 2fr 1fr 1fr;
gap: 36px;
margin-bottom: 36px;
}
.footer-brand .logo {
margin-bottom: 14px;
}
.footer-brand p {
font-size: 14px;
line-height: 1.7;
color: var(--text-gray);
max-width: 380px;
}
.footer-col h4 {
font-size: 14px;
font-weight: 700;
color: var(--text-light);
margin-bottom: 14px;
letter-spacing: 0.02em;
}
.footer-col a {
display: block;
font-size: 13px;
color: var(--text-gray);
padding: 5px 0;
border-bottom: none;
transition: color var(--transition);
}
.footer-col a:hover {
color: var(--secondary);
border-bottom: none;
}
.footer-bottom {
border-top: 1px solid var(--border-light);
padding-top: 20px;
display: flex;
flex-wrap: wrap;
align-items: center;
gap: 10px 16px;
font-size: 12px;
color: #6B6660;
}
.footer-bottom p {
font-size: 12px;
color: #6B6660;
}
.footer-links {
display: flex;
align-items: center;
gap: 8px;
font-size: 12px;
}
.footer-links a {
color: #6B6660;
border-bottom: none;
font-size: 12px;
}
.footer-links a:hover {
color: var(--secondary);
border-bottom: none;
}
.footer-links span {
color: #444;
}
/* ========== Responsive ========== */
@media (max-width: 1024px) {
.hero-content {
grid-template-columns: 1fr;
gap: 32px;
}
.hero-visual {
max-height: 300px;
}
.hero-visual img {
min-height: 260px;
}
.compare-grid {
grid-template-columns: repeat(2, 1fr);
gap: 16px;
}
.compare-card:last-child {
grid-column: span 2;
}
.scope-grid {
grid-template-columns: repeat(2, 1fr);
}
.guide-grid {
grid-template-columns: repeat(2, 1fr);
gap: 16px;
}
.guide-step:last-child {
grid-column: span 2;
}
.footer-grid {
grid-template-columns: 1.5fr 1fr 1fr;
gap: 24px;
}
}
@media (max-width: 768px) {
.section {
padding: var(--section-pad-mobile);
}
.header-inner {
flex-wrap: wrap;
}
.main-nav {
display: none;
position: absolute;
top: 100%;
left: 0;
right: 0;
background: rgba(13, 12, 18, 0.98);
backdrop-filter: blur(24px);
-webkit-backdrop-filter: blur(24px);
flex-direction: column;
align-items: stretch;
padding: 16px 24px 24px;
gap: 4px;
border-bottom: 1px solid var(--border-light);
box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
z-index: 999;
}
.main-nav.open {
display: flex;
}
.main-nav a {
padding: 14px 12px;
font-size: 16px;
border-radius: 10px;
}
.nav-cta {
margin-top: 10px;
justify-content: center;
padding: 14px 20px;
}
.nav-toggle {
display: flex;
margin-left: auto;
}
.header-inner {
gap: 10px;
}
.hero-section {
padding: 120px 0 56px;
min-height: auto;
}
.hero-title {
font-size: 28px;
}
.hero-subtitle {
font-size: 15px;
}
.hero-actions {
flex-direction: column;
align-items: stretch;
}
.hero-actions .btn-primary,
.hero-actions .btn-secondary {
justify-content: center;
width: 100%;
}
.compare-grid {
grid-template-columns: 1fr;
gap: 14px;
}
.compare-card:last-child {
grid-column: auto;
}
.scope-grid {
grid-template-columns: 1fr 1fr;
gap: 12px;
}
.guide-grid {
grid-template-columns: 1fr;
gap: 14px;
}
.guide-step:last-child {
grid-column: auto;
}
.footer-grid {
grid-template-columns: 1fr;
gap: 24px;
}
.footer-bottom {
flex-direction: column;
align-items: flex-start;
gap: 6px;
}
}
@media (max-width: 520px) {
.container {
padding: 0 16px;
}
.hero-section {
padding: 110px 0 40px;
}
.hero-title {
font-size: 24px;
}
.hero-badge {
font-size: 12px;
padding: 4px 12px;
}
.scope-grid {
grid-template-columns: 1fr;
}
.acordion-trigger h3 {
font-size: 14px;
}
.faq-trigger h3 {
font-size: 13px;
}
.cta-inner h2 {
font-size: 22px;
}
}

/* roulang page: category4 */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition);
            border-bottom: 1px solid transparent;
        }

        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            line-height: 1.25;
            font-weight: 700;
        }

        p {
            margin: 0 0 1em;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad);
        }

        .section-alt {
            background-color: var(--bg-dark-gray);
        }

        .section-light {
            background-color: var(--bg-light);
        }

        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }

        .section-light p {
            color: #5A5548;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }

        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-light .section-title {
            color: var(--text-dark);
        }

        .section-light .section-desc {
            color: #5A5548;
        }

        .section-light .section-tag {
            color: var(--primary);
            border-color: rgba(255, 90, 55, 0.3);
            background: rgba(255, 90, 55, 0.06);
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }

        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 12px;
            border-radius: 8px;
            border-bottom: none;
            white-space: nowrap;
            transition: color var(--transition), background-color var(--transition);
        }

        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
        }

        .main-nav a.active {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.08);
            border: 1px solid rgba(46, 230, 214, 0.2);
        }

        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 20px !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            box-shadow: var(--shadow-warm);
            border-bottom: none !important;
            transition: background-color var(--transition), transform var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            border-bottom: none;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            border-bottom: none;
            line-height: 1.2;
            min-height: 44px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-warm);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
            border-bottom: none;
            box-shadow: 0 12px 35px rgba(255, 90, 55, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
        }

        .btn-secondary {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
            box-shadow: none;
        }

        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            color: var(--secondary);
            border-bottom: 1.5px solid var(--secondary);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .btn-secondary:active {
            transform: translateY(0);
            filter: brightness(1.05);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
            min-height: 36px;
        }

        /* ========== Hero ========== */
        .hero-category {
            position: relative;
            padding: 160px 0 80px;
            background: var(--bg-charcoal);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 90, 55, 0.2) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 40%, rgba(46, 230, 214, 0.12) 0%, transparent 55%),
                linear-gradient(180deg, rgba(13, 12, 18, 0.6) 0%, rgba(13, 12, 18, 0.85) 100%);
            z-index: 1;
        }

        .hero-category .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-category-content .section-tag {
            margin-bottom: 16px;
        }

        .hero-category-content h1 {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .hero-category-content .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-gray);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-note {
            font-size: 13px;
            color: var(--text-gray);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-note .dot {
            width: 6px;
            height: 6px;
            background: var(--secondary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .hero-visual .visual-frame {
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card), 0 0 50px rgba(46, 230, 214, 0.08);
            position: relative;
        }

        .hero-visual .visual-frame img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }

        .hero-visual .visual-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(13, 12, 18, 0.85);
            backdrop-filter: blur(12px);
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary);
        }

        .visual-badge .badge-icon {
            width: 22px;
            height: 22px;
            background: var(--secondary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: #0D0C12;
            font-weight: 700;
        }

        /* ========== Case Alternating Sections ========== */
        .case-section {
            padding: 80px 0;
        }

        .case-section:nth-child(even) {
            background: var(--bg-dark-gray);
        }

        .case-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 56px;
        }

        .case-row:last-child {
            margin-bottom: 0;
        }

        .case-row.reverse .case-image {
            order: 2;
        }

        .case-row.reverse .case-content {
            order: 1;
        }

        .case-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            position: relative;
            aspect-ratio: 4/3;
        }

        .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .case-image:hover img {
            transform: scale(1.04);
        }

        .case-image .case-number {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(13, 12, 18, 0.8);
            backdrop-filter: blur(10px);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            border: 1px solid rgba(46, 230, 214, 0.35);
            font-family: var(--font-num);
        }

        .case-content h2 {
            font-size: clamp(22px, 2.5vw, 28px);
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .case-content .case-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-gray);
            margin-bottom: 16px;
        }

        .case-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .case-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 16px;
            background: rgba(46, 230, 214, 0.1);
            color: var(--secondary);
            border: 1px solid rgba(46, 230, 214, 0.2);
        }

        .case-stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }

        .case-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .case-stat .stat-value {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
        }

        .case-stat .stat-label {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* ========== Scenario Grid ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .scenario-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition);
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-cyan);
        }

        .scenario-card .sc-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 90, 55, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 90, 55, 0.2);
        }

        .scenario-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-gray);
            margin-bottom: 0;
        }

        /* ========== Process Steps ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .process-step {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            transition: all var(--transition);
            text-align: center;
        }

        .process-step:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 90, 55, 0.25);
            box-shadow: var(--shadow-warm);
        }

        .process-step .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            box-shadow: var(--shadow-warm);
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--text-gray);
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(46, 230, 214, 0.2);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--secondary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--secondary);
            transition: transform var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: rgba(46, 230, 214, 0.3);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-gray);
            margin-bottom: 0;
        }

        /* ========== CTA Section ========== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(255, 90, 55, 0.12) 0%, rgba(46, 230, 214, 0.06) 50%, rgba(13, 12, 18, 0.9) 100%),
                var(--bg-charcoal);
            border-top: 1px solid rgba(255, 90, 55, 0.2);
            border-bottom: 1px solid rgba(255, 90, 55, 0.2);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.2) 0%, transparent 70%);
            top: 50%;
            left: 10%;
            transform: translateY(-50%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(46, 230, 214, 0.15) 0%, transparent 70%);
            top: 50%;
            right: 10%;
            transform: translateY(-50%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            margin-bottom: 28px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            align-items: center;
        }

        .cta-subnote {
            font-size: 13px;
            color: var(--text-gray);
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .cta-subnote .check {
            color: var(--secondary);
            font-weight: 700;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0A090E;
            border-top: 1px solid var(--border-light);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-gray);
            margin-bottom: 0;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            padding: 6px 0;
            border-bottom: none;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-gray);
            margin-bottom: 0;
        }

        .footer-links {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-gray);
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-gray);
            border-bottom: none;
        }

        .footer-links a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-category .container {
                gap: 32px;
            }

            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }

            .header-inner {
                padding: 12px 0;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(13, 12, 18, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-light);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                opacity: 0;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

            .main-nav.open {
                max-height: 560px;
                pointer-events: auto;
                opacity: 1;
            }

            .main-nav a {
                font-size: 16px;
                padding: 14px 16px;
                border-radius: 10px;
                text-align: left;
            }

            .nav-cta {
                text-align: center;
                margin-top: 8px;
            }

            .hero-category {
                padding: 120px 0 56px;
                min-height: auto;
            }

            .hero-category .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-category-content h1 {
                font-size: clamp(28px, 8vw, 36px);
            }

            .hero-visual .visual-frame {
                max-width: 100%;
            }

            .hero-visual .visual-frame img {
                height: 220px;
            }

            .case-row,
            .case-row.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .case-row.reverse .case-image {
                order: 1;
            }

            .case-row.reverse .case-content {
                order: 2;
            }

            .case-stats {
                flex-direction: column;
                gap: 12px;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .process-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .btn {
                width: 100%;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-note {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .case-image {
                aspect-ratio: 16/10;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 14px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition), transform var(--transition);
            border-bottom: 1px solid transparent;
        }
        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background-color: var(--bg-dark-gray);
        }
        .section-light {
            background-color: var(--bg-light);
        }
        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }
        .section-light p {
            color: #5A5548;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }
        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            line-height: 1.25;
        }
        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }
        .section-light .section-title {
            color: var(--text-dark);
        }
        .section-light .section-desc {
            color: #5A5548;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }
        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 12px;
            border-radius: 8px;
            white-space: nowrap;
            border-bottom: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }
        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
            transform: translateY(-1px);
        }
        .main-nav a.active {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.1);
            border-bottom: none;
            font-weight: 600;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            white-space: nowrap;
            box-shadow: var(--shadow-warm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            flex-shrink: 0;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            border-bottom: none;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.25), 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .header-cta:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .header-cta:active {
            transform: translateY(0);
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(255, 90, 55, 0.2);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            flex-shrink: 0;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .article-hero {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(180deg, #0D0C12 0%, #12111A 45%, #17151E 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -150px;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.12) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -250px;
            left: -100px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(46, 230, 214, 0.08) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-gray);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .hero-breadcrumb a {
            color: var(--text-gray);
            border-bottom: none;
            transition: color var(--transition);
        }
        .hero-breadcrumb a:hover {
            color: var(--secondary);
            border-bottom: none;
        }
        .hero-breadcrumb .sep {
            color: var(--primary);
            font-weight: 600;
        }
        .hero-breadcrumb .current {
            color: var(--secondary);
            font-weight: 500;
        }
        .article-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-light);
            max-width: 780px;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        .article-hero .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-gray);
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* ========== Reading Area Layout ========== */
        .reading-layout {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 48px;
            align-items: start;
            padding: 64px 0;
        }
        .sidebar-toc {
            position: sticky;
            top: 100px;
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-toc h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-toc h3::before {
            content: '';
            width: 4px;
            height: 18px;
            border-radius: 2px;
            background: var(--primary);
        }
        .sidebar-toc ul {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-toc a {
            font-size: 14px;
            color: var(--text-gray);
            padding: 8px 10px;
            border-radius: 8px;
            border-bottom: none;
            display: block;
            transition: color var(--transition), background var(--transition), padding-left var(--transition);
        }
        .sidebar-toc a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
            padding-left: 16px;
        }
        .sidebar-toc a.active {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.08);
            font-weight: 600;
        }
        .toc-cta-box {
            margin-top: 20px;
            padding: 16px;
            background: rgba(255, 90, 55, 0.08);
            border: 1px solid rgba(255, 90, 55, 0.2);
            border-radius: var(--radius-sm);
            text-align: center;
        }
        .toc-cta-box p {
            font-size: 12px;
            color: var(--text-gray);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .toc-cta-box a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            transition: background var(--transition), transform var(--transition);
        }
        .toc-cta-box a:hover {
            background: var(--primary-dark);
            border-bottom: none;
            color: #fff;
            transform: translateY(-1px);
        }

        /* ========== Article Content ========== */
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-gray);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-light);
            margin: 48px 0 16px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .article-body h2:first-child {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body strong {
            color: var(--text-light);
            font-weight: 600;
        }
        .article-body .highlight {
            color: var(--secondary);
            font-weight: 600;
        }
        .article-body .highlight-warm {
            color: var(--primary-light);
            font-weight: 600;
        }
        .article-body blockquote {
            border-left: 3px solid var(--primary);
            padding: 16px 20px;
            margin: 24px 0;
            background: rgba(255, 90, 55, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-light);
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: none;
            position: relative;
            padding-left: 18px;
            margin-bottom: 8px;
        }
        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 11px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            opacity: 0.7;
        }
        .article-body ol {
            counter-reset: article-counter;
        }
        .article-body ol li {
            list-style: none;
            counter-increment: article-counter;
            position: relative;
            padding-left: 36px;
            margin-bottom: 12px;
        }
        .article-body ol li::before {
            content: counter(article-counter);
            position: absolute;
            left: 0;
            top: 2px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(46, 230, 214, 0.12);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(46, 230, 214, 0.25);
        }
        .article-image-block {
            margin: 32px 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }
        .article-image-block img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .article-image-block .img-caption {
            padding: 12px 18px;
            font-size: 13px;
            color: var(--text-gray);
            background: var(--bg-dark-gray);
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-image-block .img-caption::before {
            content: '📷';
            font-size: 14px;
        }
        .inline-data-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 16px;
            margin: 28px 0;
        }
        .inline-data-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 20px 18px;
            text-align: center;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        .inline-data-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-cyan);
        }
        .inline-data-card .number {
            font-size: 32px;
            font-weight: 800;
            font-family: var(--font-num);
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .inline-data-card .label {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.4;
        }

        /* ========== Case Study Box ========== */
        .case-study-box {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            margin: 32px 0;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .case-study-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
        }
        .case-study-box .case-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-light);
            letter-spacing: 0.06em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .case-study-box h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .case-study-box p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-dark-gray);
            padding: var(--section-pad);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(13, 12, 18, 0.7);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(46, 230, 214, 0.2);
        }
        .faq-item.active {
            border-color: rgba(46, 230, 214, 0.35);
            box-shadow: var(--shadow-cyan);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            transition: color var(--transition), background var(--transition);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }
        .faq-question:hover {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.04);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            transition: transform var(--transition), background var(--transition), color var(--transition);
            font-size: 16px;
            color: var(--text-gray);
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: rgba(46, 230, 214, 0.15);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-gray);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            position: relative;
            padding: var(--section-pad);
            background: linear-gradient(180deg, #17151E 0%, #0D0C12 100%);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(255, 90, 55, 0.1) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .cta-inner p {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-gray);
            margin-bottom: 28px;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border-bottom: none;
            box-shadow: var(--shadow-warm);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-bottom: none;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 40px rgba(255, 90, 55, 0.3), 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .btn-primary:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            background: #D43D20;
            box-shadow: 0 4px 16px rgba(255, 90, 55, 0.2);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            background: transparent;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--secondary);
            border-bottom: none;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            border-bottom: none;
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-secondary:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(46, 230, 214, 0.15);
        }
        .cta-note {
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .cta-note::before {
            content: '⚡';
            font-size: 14px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0A0910;
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 22px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-gray);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            padding: 6px 0;
            border-bottom: none;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            border-bottom: none;
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--text-gray);
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }
        .footer-links a {
            color: var(--text-gray);
            border-bottom: none;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            border-bottom: none;
        }
        .footer-links span {
            color: rgba(255, 255, 255, 0.2);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .reading-layout {
                grid-template-columns: 220px 1fr;
                gap: 32px;
            }
            .main-nav {
                gap: 2px;
            }
            .main-nav a {
                padding: 8px 10px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }
            .header-inner {
                padding: 12px 0;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                right: 0;
                left: 0;
                bottom: auto;
                max-height: 0;
                overflow: hidden;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(13, 12, 18, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-light);
                transition: max-height var(--transition), padding var(--transition);
                padding: 0 20px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .main-nav.open {
                max-height: 420px;
                padding: 16px 20px;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 10px;
            }
            .header-cta {
                display: none;
            }
            .article-hero {
                padding: 120px 0 56px;
            }
            .article-hero h1 {
                font-size: 28px;
            }
            .article-hero .hero-subtitle {
                font-size: 16px;
            }
            .reading-layout {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 40px 0;
            }
            .sidebar-toc {
                position: static;
                padding: 16px 14px;
            }
            .sidebar-toc h3 {
                font-size: 14px;
                margin-bottom: 10px;
            }
            .sidebar-toc a {
                font-size: 13px;
                padding: 6px 8px;
            }
            .toc-cta-box {
                display: none;
            }
            .article-body h2 {
                font-size: 22px;
                margin-top: 36px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .inline-data-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .inline-data-card .number {
                font-size: 24px;
            }
            .case-study-box {
                padding: 18px 20px;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: none;
            }
            .footer-bottom {
                text-align: center;
            }
            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 44px 0;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-hero .hero-subtitle {
                font-size: 14px;
            }
            .hero-meta {
                gap: 10px;
                font-size: 12px;
            }
            .article-body {
                font-size: 15px;
            }
            .inline-data-row {
                grid-template-columns: 1fr;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .faq-question {
                font-size: 14px;
            }
            .faq-answer p {
                font-size: 13px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
                padding: 12px 20px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #FF5A37;
            --primary-dark: #E6492A;
            --primary-light: #FF7A5C;
            --secondary: #2EE6D6;
            --secondary-dark: #1CC4B6;
            --bg-charcoal: #0D0C12;
            --bg-dark-gray: #17151E;
            --bg-light: #F5F1E8;
            --text-light: #F5F1E8;
            --text-gray: #B8B2A7;
            --text-dark: #1A181E;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-dark: rgba(0, 0, 0, 0.06);
            --shadow-warm: 0 8px 30px rgba(255, 90, 55, 0.15), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-cyan: 0 8px 30px rgba(46, 230, 214, 0.12), 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-sm: 12px;
            --radius-btn: 10px;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --container-max: 1200px;
            --section-pad: 88px 0;
            --section-pad-mobile: 56px 0;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background-color: var(--bg-charcoal);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background-color var(--transition);
            border-bottom: 1px solid transparent;
        }

        a:hover {
            color: var(--secondary);
            border-bottom-color: var(--secondary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 16px;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: var(--section-pad);
        }

        .section-alt {
            background-color: var(--bg-dark-gray);
        }

        .section-light {
            background-color: var(--bg-light);
        }

        .section-light h2,
        .section-light h3 {
            color: var(--text-dark);
        }

        .section-light p {
            color: #5A5548;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(46, 230, 214, 0.3);
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(46, 230, 214, 0.06);
        }

        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            line-height: 1.25;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-gray);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-light .section-title {
            color: var(--text-dark);
        }

        .section-light .section-desc {
            color: #5A5548;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 12, 18, 0.72);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid transparent;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(13, 12, 18, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8A65);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-warm);
        }

        .logo:hover {
            color: var(--text-light);
            border-bottom: none;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 8px 14px;
            border-radius: 8px;
            border-bottom: none;
            transition: color var(--transition), background-color var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
            border-bottom: none;
        }

        .main-nav a.active {
            color: var(--primary-light);
            background: rgba(255, 90, 55, 0.08);
            font-weight: 600;
        }

        .nav-cta {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            box-shadow: var(--shadow-warm);
            transition: all var(--transition);
            white-space: nowrap;
            border-bottom: none;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: 0 10px 34px rgba(255, 90, 55, 0.25), 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.04);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: all var(--transition);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger:hover {
            border-color: rgba(255, 90, 55, 0.4);
            background: rgba(255, 90, 55, 0.08);
        }

        /* Mobile full-screen menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            background: rgba(13, 12, 18, 0.98);
            backdrop-filter: blur(20px);
            padding: 80px 24px 24px;
            flex-direction: column;
            align-items: stretch;
            gap: 8px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition);
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
            padding: 16px 20px;
            border-radius: 12px;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(255, 90, 55, 0.1);
            border-bottom: 1px solid rgba(255, 90, 55, 0.3);
            color: var(--primary-light);
        }

        .mobile-menu .nav-cta {
            margin-top: 16px;
            text-align: center;
            font-size: 17px;
            padding: 14px 20px;
        }

        /* Category6 Hero */
        .category-hero {
            padding: 130px 0 70px;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(255, 90, 55, 0.15) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 40%, rgba(46, 230, 214, 0.08) 0%, transparent 50%),
                var(--bg-charcoal);
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(46, 230, 214, 0.25), transparent);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: clamp(30px, 4.5vw, 46px);
            font-weight: 800;
            line-height: 1.18;
            color: var(--text-light);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-content h1 span {
            color: var(--primary-light);
        }

        .hero-content .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-gray);
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: none;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-warm);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 90, 55, 0.3), 0 2px 8px rgba(0, 0, 0, 0.3);
            border-bottom: none;
        }

        .btn-primary:focus,
        .btn:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #D43F22;
            box-shadow: 0 4px 16px rgba(255, 90, 55, 0.2);
        }

        .btn-secondary {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }

        .btn-secondary:hover {
            background: rgba(46, 230, 214, 0.1);
            color: var(--secondary);
            transform: translateY(-2px);
            border-bottom: 1.5px solid var(--secondary);
        }

        .btn-secondary:active {
            transform: translateY(0);
            background: rgba(46, 230, 214, 0.06);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual img {
            width: 100%;
            max-width: 480px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            object-fit: cover;
        }

        .hero-data-chip {
            position: absolute;
            bottom: 20px;
            right: 10px;
            background: rgba(13, 12, 18, 0.9);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(46, 230, 214, 0.3);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            box-shadow: var(--shadow-cyan);
        }

        .hero-data-chip .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }

        /* Metrics Section */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .metric-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: left;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0.5;
            transition: opacity var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 214, 0.3);
            box-shadow: var(--shadow-cyan);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-number {
            font-family: var(--font-num);
            font-size: 42px;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .metric-number span {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-light);
            margin-left: 4px;
        }

        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-gray);
            margin-bottom: 6px;
        }

        .metric-desc {
            font-size: 13px;
            color: var(--text-gray);
            opacity: 0.7;
            line-height: 1.6;
        }

        /* Chart Placeholder Section */
        .chart-grid {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 24px;
            margin-top: 24px;
        }

        .chart-panel {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 32px;
            transition: all var(--transition);
        }

        .chart-panel:hover {
            border-color: rgba(46, 230, 214, 0.25);
            box-shadow: var(--shadow-cyan);
        }

        .chart-panel h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .chart-bars {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .chart-bar-row {
            display: grid;
            grid-template-columns: 110px 1fr 60px;
            align-items: center;
            gap: 12px;
        }

        .chart-bar-label {
            font-size: 13px;
            color: var(--text-gray);
            font-weight: 500;
            white-space: nowrap;
        }

        .chart-bar-track {
            height: 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            overflow: hidden;
            position: relative;
        }

        .chart-bar-fill {
            height: 100%;
            border-radius: 8px;
            transition: all var(--transition);
            position: relative;
        }

        .chart-bar-fill.warm {
            background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
        }

        .chart-bar-fill.cyan {
            background: linear-gradient(90deg, var(--secondary-dark), var(--secondary));
        }

        .chart-bar-fill.mixed {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .chart-bar-value {
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            text-align: right;
            white-space: nowrap;
        }

        .chart-legend {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-gray);
        }

        .chart-legend span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .legend-dot {
            width: 10px;
            height: 10px;
            border-radius: 3px;
            display: inline-block;
        }

        .legend-dot.orange { background: var(--primary); }
        .legend-dot.teal { background: var(--secondary); }
        .legend-dot.dark { background: #5A5548; }

        /* Donut chart placeholder */
        .donut-placeholder {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .donut-circle {
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: conic-gradient(var(--primary) 0% 38%, var(--secondary) 38% 62%, #5A5548 62% 84%, #2EE6D6 84% 100%);
            position: relative;
            flex-shrink: 0;
        }

        .donut-circle::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
        }

        .donut-center-label {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 1;
            text-align: center;
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.2;
        }

        .donut-center-label small {
            display: block;
            font-size: 11px;
            font-weight: 500;
            color: var(--text-gray);
            font-family: var(--font-sans);
        }

        .donut-stats {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .donut-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-gray);
        }

        .donut-stat-item strong {
            font-family: var(--font-num);
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            min-width: 40px;
        }

        /* Service Detail Cards */
        .service-detail-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .service-detail-card {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .service-detail-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 90, 55, 0.3);
            box-shadow: var(--shadow-warm);
        }

        .service-detail-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .service-detail-card .card-icon.orange {
            background: rgba(255, 90, 55, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(255, 90, 55, 0.25);
        }

        .service-detail-card .card-icon.teal {
            background: rgba(46, 230, 214, 0.08);
            color: var(--secondary);
            border: 1px solid rgba(46, 230, 214, 0.25);
        }

        .service-detail-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-light);
            margin: 0;
            letter-spacing: -0.01em;
        }

        .service-detail-card p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.75;
            margin: 0;
        }

        .service-detail-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            border-bottom: 1px solid transparent;
            align-self: flex-start;
            margin-top: auto;
        }

        .service-detail-card .card-link:hover {
            border-bottom-color: var(--secondary);
        }

        /* Process Steps */
        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 32px;
            margin-top: 24px;
        }

        .process-step {
            display: grid;
            grid-template-columns: 56px 1fr;
            gap: 20px;
            align-items: flex-start;
        }

        .step-number-badge {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            border: 2px solid var(--primary);
            color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-size: 22px;
            font-weight: 700;
            flex-shrink: 0;
            background: rgba(255, 90, 55, 0.06);
            transition: all var(--transition);
        }

        .process-step:hover .step-number-badge {
            background: rgba(255, 90, 55, 0.15);
            box-shadow: var(--shadow-warm);
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.75;
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--bg-dark-gray);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(46, 230, 214, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            text-align: left;
            transition: all var(--transition);
            border-bottom: 1px solid transparent;
        }

        .faq-question:hover {
            color: var(--secondary);
            background: rgba(46, 230, 214, 0.03);
        }

        .faq-question .arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            position: relative;
            transition: transform var(--transition);
        }

        .faq-question .arrow::before,
        .faq-question .arrow::after {
            content: '';
            position: absolute;
            background: var(--secondary);
            border-radius: 2px;
        }

        .faq-question .arrow::before {
            width: 2px;
            height: 12px;
            top: 4px;
            left: 9px;
        }

        .faq-question .arrow::after {
            width: 12px;
            height: 2px;
            top: 9px;
            left: 4px;
        }

        .faq-item.active .faq-question .arrow {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.75;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        .faq-item.active .faq-question {
            border-bottom-color: rgba(46, 230, 214, 0.15);
            color: var(--secondary);
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background:
                radial-gradient(ellipse at 50% 40%, rgba(255, 90, 55, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 70%, rgba(46, 230, 214, 0.1) 0%, transparent 45%),
                var(--bg-dark-gray);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .cta-content {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .cta-content p {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .cta-note {
            font-size: 13px;
            color: var(--text-gray);
            opacity: 0.7;
            margin-top: 14px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-charcoal);
            border-top: 1px solid var(--border-light);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.75;
            margin-top: 14px;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 10px;
            border-bottom: none;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--secondary);
            border-bottom: none;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-gray);
        }

        .footer-bottom p {
            margin: 0;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-gray);
            font-size: 13px;
            border-bottom: none;
        }

        .footer-links a:hover {
            color: var(--secondary);
            border-bottom: none;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-visual {
                order: -1;
            }

            .hero-visual img {
                max-width: 100%;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .chart-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }

            .category-hero {
                padding: 100px 0 50px;
            }

            .main-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .nav-cta.desktop-cta {
                display: none;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .metric-number {
                font-size: 34px;
            }

            .service-detail-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .chart-bar-row {
                grid-template-columns: 80px 1fr 50px;
                gap: 8px;
            }

            .chart-bar-label {
                font-size: 12px;
            }

            .chart-panel {
                padding: 20px;
            }

            .donut-circle {
                width: 130px;
                height: 130px;
            }

            .donut-circle::after {
                width: 72px;
                height: 72px;
            }

            .donut-center-label {
                font-size: 20px;
            }

            .process-step {
                grid-template-columns: 44px 1fr;
                gap: 14px;
            }

            .step-number-badge {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .btn {
                width: 100%;
                padding: 13px 20px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-data-chip {
                position: static;
                margin-top: 12px;
                justify-content: center;
            }

            .chart-legend {
                gap: 10px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

            .section-title {
                font-size: 22px;
            }

            .metric-number {
                font-size: 30px;
            }

            .chart-bar-row {
                grid-template-columns: 70px 1fr 45px;
            }

            .chart-bar-label {
                font-size: 11px;
            }

            .donut-placeholder {
                flex-direction: column;
                gap: 20px;
            }

            .donut-stats {
                width: 100%;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .site-footer {
                padding: 40px 0 16px;
            }
        }